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Microphase separation transition and ordering kinetics in thin films of diblock copolymers

Mutter, R. and Stühn, B. (1995):
Microphase separation transition and ordering kinetics in thin films of diblock copolymers.
In: Colloid and Polymer science, pp. 653-660, 273, (7), [Article]

Abstract

Using x-ray reflectivity measurements, we have investigated the structure of films of a symmetric diblock copolymer of polystyrene-b-polyisoprene (M(w) = 15 700). The film thickness is in the range of 1 mu m. In equilibrium the films consist of lamellae with a thickness of 15.3 nm. They are nearly completely oriented parallel to the substrate. The evolution of oriented structure is studied by time-dependent experiments. The time constants of the structure formation depend strongly on the annealing temperature. An enhancement of the diffuse intensity in the range of Yoneda scattering is evidence for an additional surface structure.

Item Type: Article
Erschienen: 1995
Creators: Mutter, R. and Stühn, B.
Title: Microphase separation transition and ordering kinetics in thin films of diblock copolymers
Language: English
Abstract:

Using x-ray reflectivity measurements, we have investigated the structure of films of a symmetric diblock copolymer of polystyrene-b-polyisoprene (M(w) = 15 700). The film thickness is in the range of 1 mu m. In equilibrium the films consist of lamellae with a thickness of 15.3 nm. They are nearly completely oriented parallel to the substrate. The evolution of oriented structure is studied by time-dependent experiments. The time constants of the structure formation depend strongly on the annealing temperature. An enhancement of the diffuse intensity in the range of Yoneda scattering is evidence for an additional surface structure.

Journal or Publication Title: Colloid and Polymer science
Volume: 273
Number: 7
Divisions: 05 Department of Physics
05 Department of Physics > Institute for condensed matter physics
Date Deposited: 26 Feb 2010 14:18
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